If you've never done the Maglev before, it's worth trying for novelty value alone, but as you will note from the following thread, taxis are hard to beat, as are buses if you happen to need to go where they terminate. The subway all the way is a nonstarter... full stop.

I suggest you take the subway/Maglev on your way in and bus or taxi on your way back to the airport (Maglev doesn't run at top speed early in the morning anyway).

http://www.flyertalk.com/forum/china...ta-thread.html